4. Solved Examples

Try these first

1. 1.

   Define curvature and give an example.

   Hint

   Think about how easily a vehicle can navigate.

2. 2.

   What does chainage indicate?

   Hint

   It helps in locating specific points on roads.

3. 3.

   What is the formula for the length of a circular curve?

   • L = R * Δ * (π/180)
   • L = R / Δ
   • L = R + Δ

   Hint

   Remember how we calculate curve length.

4. 4.

   The tangent length decreases as the radius increases.

   • True
   • False

   Hint

   Think about the geometry of circles.

5. 5.

   Design a curve for a road segment intersecting at an angle of 90 degrees, incorporating a radius of 100 m. Calculate tangent and curve lengths.

   Hint

   Remember to check angle measures during calculations.

6. 6.

   If a road has a chainage of 500 m at the intersection and a tangent length of 40 m, what is the chainage at the start of the curve?

   Hint

   Visualize the intersection to visualize where points fall on the curve.